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2 years ago

Combining like terms -3(5x+4)-(2x+2)-3x+6

Mathematics

1 answer:

jasenka [17]2 years ago

6 0

I answer should be -20x-8

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PLEASE HELP ASAP!!!!!!!!!!!

marusya05 [52]

Answer:(1) The correct option is b. (2) The correct option is c.

Explanation:

(1)

It is given that the △ABD≅△FEC.

So by (CPCTC) corresponding parts of congruent triangles are congruent.

$\angle CFE=\angle DAB$

It is given that the angle DAB is 63 degree.

$\angle CFE=63^{\circ}$

Therefore, the correct option is b.

(2)

It is given that the △ABD≅△FEC.

So by (CPCTC) corresponding parts of congruent triangles are congruent.

$BD=EC$

$BD=CD+DE$

$BD=8+10$

$BD=18$

Therefore, the correct option is c.

4 0

2 years ago

Read 2 more answers

What is the range of the given function? {(–2, 0), (–4, –3), (2, –9), (0, 5), (–5, 7)} {x | x = –5, –4, –2, 0, 2} {y | y = –9, –

Fantom [35]

The range ={-9,-3,0,5,7}

3 0

2 years ago

Read 2 more answers

(IF ANSWERED CORRECTLY WILL GIVE BRAINLIEST)

ahrayia [7]

172 ÷ 4 = 43 miles per hour

43 ÷ 5 = 10.75 miles per 12 minutes

8 0

2 years ago

Fill in the blanks to make the equation true.<br><br> (x−9)(x+2)= x^2________ −18

-BARSIC- [3]

Answer:

I think it's -7x? not sure though

Step-by-step explanation:

(x-9)(x+2)=x^2______-18

x^2+2x-9x-18=x^2____-18

x^2-7x-18=x^2____-18

That's what I got don't quote me on it though. Sorry if I couldn't help much

7 0

3 years ago

Read 2 more answers

3. Which of the following equations is equivalent to the equation shown below? x^2 + 4x + 15 = 0

stiv31 [10]

We need to expand the answer choices and see which one matches the equation

$x^2+4x+15=0$

Remember the algebraic rules:

$(a\pm b)^2=a^2\pm2ab+b^2$

Now, if we expand choice D, we should get this. Let's expand:

$\begin{gathered} (x+2)^2=-11 \\ x^2+2(1)(2)+(2)^2=-11 \\ x^2+4x+4=-11 \\ x^2+4x+4+11=0 \\ x^2+4x+15=0 \end{gathered}$

5 0

8 months ago